St. Marks is a Republican stronghold. About 23% of voters here vote Democratic and 77% Republican.
About 80% of adults in St. Marks typically vote, above the U.S. average of about 62%. Among adults in St. Marks, ~18% vote Democratic, ~61% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How St. Marks compares
Among cities within 25 miles, St. Marks leans more Republican than 55 of 86 neighbors.
St. Marks runs about 36 points more Republican than Indiana as a whole.
Why St. Marks leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in St. Marks. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; St. Marks, IN sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in St. Marks looks the way it does
Turnout in St. Marks sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- St. Anthony, IN R+56
- Schnellville, IN R+57
- Ferdinand, IN R+50
- Siberia, IN R+54
- Mentor, IN R+56
- Birdseye, IN R+56
- Celestine, IN R+57
- Huntingburg, IN R+39
- St. Henry, IN R+51
- Riceville, IN R+55
Cities with Similar Populations
- Zemuly, MS R+3
- Five Points, OH R+55
- DeJarnett, VA R+29
- Stonewall, AR R+69
- Minnesota, GA R+76
- Hastain, MO R+65
- Paraje, NM D+47
- Pacio, TX R+78
- Hazelwood, WV R+56
- Omar, NY R+47
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Sources and methodology
Precinct-level voting records used to fit the model come from Indiana Secretary of State, Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.